﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp1
{
    class Square: Shape
    {
      
      
        public override void GetArea(double sideLen)
        {
            base.GetArea(sideLen);
            Console.WriteLine("正方形的面积" + (sideLen * sideLen));
        }



    }
}
